This make me so cross, those on the 'outside rarely seem to appreciate the effort that goes into achieving this result.
To let them know on a more casual basis what it means, could you head your newsletter or communication method ~
Recent OFSTED inspection - GOOD ~ and then go into a few 'this means your child recieves lots of varied activities as we monitor their individual development' type statements ?.. you could also mention to the Centre's staff how great it is to be part of the Comapany & be able to build on the Business reputation that they have!!
You're providing them with a fab service so Huge Hugs for your achievement from here